[Tagging] Streets as footways in Venice, Italy

[Fernando Trebien]

On Thu, Feb 28, 2019 at 11:47 AM Martin Koppenhoefer
<dieterdreist at gmail.com> wrote:
> -1, I would not do this. I would mean to tag a 8 meter wide road as footway, just because the paths to arrive there are narrow. Also, in Venice, you will mostly have to cross bridges with steps, so width as the only criterion would be inconsistent. I would rather use the width of the way itself, regardless of the question that you can arrive there with a car (or load a car off a boat, hypothetically of course).

Of course you can try not doing this at first and then consider the
effect of doing it some time later.

Without this, I'd expect the map of Venice to have many little pouches
of highway=pedestrian scattered all over the place, which would look
weird on the rendered map. If width is the only criterion, then one
may also argue that a street that widens and then narrows ought to
have the wider part classified differently, which again would produce
a rather messy map.

> -1, acqua alta has nothing to do with width. You can often see Piazza San Marco submerged. It is a question of elevation / position.
> Nothing against tagging the susceptibility for high water, but let us not intermingle it with highway classes.

Right. But width does not necessarily correspond to
use/function/purpose. Before proposing this, I've actually checked
those safe routes for Acqua Alta and many are busy streets with shops,
which correspond to the description of highway=pedestrian.

Mapping the centerline of such streets as footways does not forbid
mapping their contours (areas) as highway=pedestrian + area=yes. This
would probably solve the problem of displaying the wider street area
when zooming in while also not giving it any special emphasis relative
to the surrounding area when zooming out.

-- 
Fernando Trebien